Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6077439 | Method for the removal of metals from solution by means of activated silica | Elias Gebran El-Ammouri, Barbara Mary-Ann Lempka, Rodger Graham Hagens | 2000-06-20 |
| 4541861 | Process for the production of cobalt, nickel and copper powders from chelating extractants | George P. Demopoulos | 1985-09-17 |